Generic selectors
Exact matches only
Search in title
Search in content

Why Antimony Impregnated, Carbon-Graphite Material is Best for Sealing Refrigerants and Other Low Viscosity Liquids

HVAC
Metcar Carbon-Graphite Material is Best for Sealing Refrigerants

Why Antimony Impregnated, Carbon-Graphite Material is Best for Sealing Refrigerants and Other Low Viscosity Liquids

By: Metcar

Designing mechanical seals for sealing refrigerants and other low viscosity liquids has been a difficult problem for seal manufacturers for many years. However, mechanical seals with antimony impregnated, carbon-graphite primary rings and solid silicon carbide counter face rings could solve this problem. Low viscosity liquids such as Freon refrigerants, liquid oxygen, liquid carbon dioxide, propane, ethylene, and acetone are now being successfully sealed using mechanical seals with Metcar Grade M-444, antimony impregnated, carbon-graphite primary seal rings.

Low viscosity liquids are difficult for mechanical seals because the hydrodynamic film that they create between the two rubbing seal faces is extremely thin. In order for this extremely thin hydrodynamic film to lubricate the two sealing faces, the seal faces must stay highly polished and they must run in very close proximity to each other. The M-444 antimony impregnated, carbon-graphite material and the solid silicon carbide and antimony impregnated carbon- graphite can enables these two materials to run in the required close proximity. Ordinary mechanical seals with resin-impregnated, carbon-graphite primary rings do not have the self-polishing characteristic or the dimensional stability that is required for sealing these low viscosity liquids.

Information on mechanical seal primary ring materials for other difficult sealing applications are available from Metcar’s Application Engineering Department.

About Metallized Carbon Corporation

Since its inception in 1945, Metallized Carbon Corporation has been manufacturing high-quality, dependable bearing solutions for severe operating environments. With over 50 years of Application Engineering experience, Metallized Carbon offers the field expertise and data necessary to provide The Solid Choice for Lubrication® in a wide variety of industries, supplying completely machined components as well as materials for customer machining. Metallized Carbon is ISO certified and produces the Metcar brand of solid, oil-free, self-lubricating materials.

For additional information about the company and its services, please visit Metcar online at www.metcar.com

Related Articles

Related Whitepapers

10 Tips To Improve Operations Of A Salt Water Disposal Pump

In the oil and gas industry, a large amount of salt water is collected during the process of oil production. In Texas, for example, the…

Cavitation Guide

Cla-Val has the technical resources you need to design and operate a fluid handling system that is both efficient and reliable. You can visit a…

Managing Aging Plants, Equipment & Infrastructure

Solving your challenges with proven solutions Chesterton is a full-solution provider for water treatment/wastewater plants and systems that are seeking to increase equipment reliability and…

Reliable Pumps for High-pressure Cleaning with Superior Handling of Abrasives and Particulates

Compact, Seal-less Pumps for Reliable Operation and Long Service Life With more than 40 years of experience serving many different industries, including major global companies,…

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

Sign up for our Newsletter!


By submitting this form, you are consenting to receive marketing emails from: Empowering Pumps & Equipment, 2205-C 7th Street, Tuscaloosa, AL, 35401, http://www.empoweringpumps.com. You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact